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23 Cards in this Set
- Front
- Back
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What is the differencebetween weather and climate? |
weather:actualconditions(temp, humidity, rainfall, ect) climate: long-term average of weather |
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What is a greenhouse climate? How is it different from the greenhouseeffect? |
greenhouse climate: no ice sheets, warm and mild everywhere.*** |
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What is an ice-houseclimate? Are we in one right now? |
glacial ice somewhere,poles much colder…. Yes? |
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How has our climate variedsince the last major glaciation?
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it has varied though warmerand colder times since then
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How has the Earth’stemperature changed recently?
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pollution has cause tempcool periods,
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Why do we think carbondioxide gas is to blame for these changes?
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l |
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What are the five main impacts that climate change will haveon the Earth?
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1 impact 1: melting glaciers= rapid climate change at the poles caused glaciers and ice caps to melt faster.
2 impact 2: rising sea levels: as glaciers melt, global sea level rises, costal areas will flood, at first during storms and then permanently. 3 impact 3: more acid oceans: carbon dioxide gas dissolves in ocean water and lowers the pH 4 impact 4: worse droughts: subtropical areas of high pressure (dry zone) move north as poles warm up 5 impact 5: super-storms: both summer and winter storms become much stronger |
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What can we do to help slowdown and control climate change?
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1-reduce our carbon footprint to slow down damage
2-put carbon dioxide gas in rocks instead of in the air. |
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Howold is the Earth? |
-4.5billion years
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Howwas the early Earth different from the planet we live on today?
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-theearly earth was not a habitable planet
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Wheredid the oxygen in our atmosphere come from?
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-the earths current air chemistry is due to plants(photosynthesis).
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Whyis DNA so important to life?
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-DNA=organic molecule that unzip and copies itself totransfer cell info
-life=ability to reproduce |
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Hadean
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-period of planet formation
-lots of volcanic eruptions -no liquid water at first -volcanic stream + comets = water to make oceans - No life |
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Archean
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-age of primitive cells -few rocks or fossils survive -no oxygen in air = no ozone -Cells were disorganized due to blasting solar radiation |
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Proterozoic
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-age of soft-bodied organisms
-oxygen builds up= ozone -cells become complex and specialized in larger bodies |
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Phanerozoic
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-age of visible fossils -hard shells and bones preserved
-history of life is well documented -climate changes can be seen |
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Whatis the principle of fossil succession?
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-fossilsare found in the same order that they lived on earth in the past.
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Whatis an index fossil? What characteristicsshould an index fossil have?
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-someorganisms (index fossils) are more useful for dating than others
Requirements 1.) Durable body parts 2.) Distinctive appearance 3.) World-wide occurrence ‘’cosmopolitan’’ 4.) short species existence ‘’flash in the pan’’ |
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Whatis artificial selection?
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-startingwith two average dogs (parents), we can artificially select who is bred.
-this will produce a dog breed with a specific trait |
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Whatis natural selection?
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-thesame selection happens in nature , but its so much less efficient
-organisms with traits that help them survive are more likely to breed. -their offspring will all have the trait, making it common overtime . |
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Whatis an adaptation?
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-anyfeature that helps with survival is called an adaptations
-new adaptations come from mutations (mistakes in DNA copying) |
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Why does evolution sometimes make unrelated organisms looksimilar to each other?
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-unrelated organisms (different DNA) can evolve the sameadaptations if they live in the same adaptations if they live in the same typeof environment.
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What are the two different ways that organisms can changethrough time? What causes these changesto occur?
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-gradual evolution: occurs under constantpressure(from climate trends, competitors or predators)
-punctuated equilibrium:species stay the same for a long time, changingonly during times of crisis. |
